Name: LEGO Mindstorms Robot Inventor
Brand: The LEGO Group (Denmark)

The LEGO Group (Denmark) LEGO Mindstorms Robot Inventor (1)

The LEGO Group (Denmark) LEGO Mindstorms Robot Inventor (2)

Was $359.99Set 51515 RRP (Brickset). On sale Oct 2020 – July 2023. The last Mindstorms set.

Discontinued · used/leftover onlyVia SSH / web / bridgeLast MindstormsSPIKE hubDiscontinued949 pieces

≤ 1 weekShipping: Used, days. Discontinued. Used sets are common on eBay and BrickLink, often above the original price.

Remote control: Programs are written in the MINDSTORMS app on a computer or tablet and sent to the hub over USB or Bluetooth. No live laptop API.

Wikipedia (Mindstorms) ↗Brickset 51515 ↗

Overview

The fifth and final Mindstorms set, sharing its motors, sensors and hub with LEGO Education SPIKE Prime. LEGO ended the Mindstorms line in 2022, and the Robot Inventor app is discontinued on October 1, 2026, with LEGO pointing owners to the SPIKE Prime app (without guaranteeing a full 1:1 experience), so newer setups may need community tools.

Specifications

Category	Modular & reconfigurable · Consumer & education kits
Released	2020
Availability	Discontinued · used/leftover only
Programmability	Full SDK
Best for	Ages 10+ (maker rating)
Vision sensors	No vision sensors
Actuators	DC / gear motors
Audio	Speaker
Compute type	Arduino / ESP32 / microcontroller
Remote control	Via SSH / web / bridge
Size	949-piece set, robot size varies
Locomotion	Any LEGO Technic build, 4 medium motors
Compute	SPIKE Prime-style hub (STM32F413 microcontroller) with 6-axis gyro/accelerometer
Camera	None (color/light sensor only)
Sensors	Distance sensor, color/light sensor, 6-axis IMU in hub
Runtime	Not published
Speed	Not published
SDK	MINDSTORMS Robot Inventor app with Scratch-based blocks and text-based Python, LEGO discontinues the app on October 1, 2026